Process and apparatus for production of a substance having a nacreous and chatoyant aspect



Jan. 29, 1929. 1,700,208

J. PAISSEAU PROCESS AND APPARATUS'FOR PRODUCTION OF A SUBSTANCE HAVING ANACREOUS AND CHATOYANT ASPECT Original Filed Nov. 19 1926 Jazz PQZSSQQa,

Patented Jan. 29, u UNITED STATES PATENT OFFICE.

JEAN :enssnao, or rams, amen.

PROCESS AND APPARATUS FOR PRODUCTION OF A SUBSTANCE HAVING A NAGREOUSAND CHATOYAN'J.

Original application flied November 19, 1926,Seria1 No. 149,444, and inFrance November 21, 1925.

Divided and this application flied March 22, 1928. Serial No. 263,948.

The present invention relates to a process and apparatus for theobtainment of nacreous and chatoyant substances and 1s a division of myapplication Serial No. 149,444, filed No- 5 Vember 19, 1926. I

The said process is based upon the use of a transparent plastic masssuch, as celluloid, acetate of cellulose, casein, and the like, intowhich are incorporated by the kneading and mixing rocess certainbrilliant partlcles such as meta lic particles, mica, vario'us metalhcsalts, pearl essence, or the like.

According to known practice, 1f a plastic mass of this kind while stillsoft is forced througha nozzle this will afford at the dischar e end ofthe nozzle strips in which the brilliant particles will all be parallelwith the surface of the said strips.

For thisreason, the strips have a uniform smooth and brilliant aspect,and their appearance and lustre, in the case of pearl essence, resemblesthe real pearl rather than the moth er of pearl, due to the absence ofall streaks.

The present invention is based upon the 26 fact that if there is anobstacle in the nozzle which hinders the issue of the said plastic mass,this obstacle will cause eddies or whirls in the said mass which willsubsist for a certain time and will cause a partial confusion 39 of thesaid particles. The particles whereof the direction is changed, andwhich have now become more or less oblique to the surface of the strip,will reflect the light indifferent directions and will give to the eyethe impres- 5 'sion of streaks, so that the surface of the resultin peary substance, will not appear smoot ,but will be irregular and cockled,and I may take advantage of this fact to obtain various decorativeeffects.

Based on the above data, the invention comprises in principle a suitablepress in which the plastic mass containing brilliant particles may beraised to the softening temperature by proper means. The said pressoperates in connection with a special nozzle whose width will dependupon the conditions of. manufacture, and whose thickness may attain oneor two centimeters or more, whereby I am enabled to provide strips of arather considerable thickness. The appended drawings show by way ofexample a nozzle according'to the invention. The said nozzle ischaracterized in that on a part of its length comprised between thewhich is sufficiently abrupt at the rear to produce the desired result.

The nozzle thus formed is adapted for different uses. If the crosssection of the nozzle is clrcular or rectangular -it can be used for themanufacture of round a pearly nature which can be used after dryhould itbe desired to obtain sheets of pearly substance by cutting up a blockwhich is manufactured by the known process, I employ a nozzle of largersize whose width at least equals the width of the block press. With theuse of a nozzle of such size, the lastic substance issues in the form ofa thick and of'l or 2 centimeters thickness. This band is cut up, asfast as formed,- into sheets having the size of the block press in use.The pieces thus obtained are piled up in the block press, after whichtheyare formed into a compact mass by heat and pressure by the knownmethods, thus producing a block which may be cut into sheets .of thedesired thickness.

Having thus described my process and apparatus what I claim as newtherein, and my own invention, is:

1. A process for the obtainment of obj ects or square rods of of anacreous and chatoyant aspect, in which a soft plastic substancecontaining brillinat partlcles is forced through a nozzle, anobstacle'being placed in the said nozzle of such nature as to change thedirection of the said brilliant particles.

2. 'An apparatus for the obtainment of obj ects of a nacreous andchatoyant aspect by the use of a soft plastic substance containingbrilliant particles, said apparatus comprising a nozzle having at leastoneinwardly extending projection disposed between the inlet and theoutlet of said nozzle, said" projection being adapted to form eddies inthe stream of the plastic substance in circulation.

3. An apparatus for the obtainmnt of a adapted to produce eddies in thecirculating nacreous and chatoyant aspect by the use of substance, saidportion commencing at a cera soft plastic substance containing brillianttain distance from the intake end of the nozarticles, said apparatuscomprising a @nozzle zle and ending at a certain distance fromthe 5 1nwhich a portion of the length between its outlet, which latter distanceis sufliciently ends is provided with projections. small to prevent alldestruction of the eddies,

4. apparatus for the obtainment of a substantially as described.

nacreous and chatoyant aspect by the use of In testimony whereof I havehereunto afa soft plastic substance containing brilliant fixed mysignature; w 10 particles, said apparatus comprising a noz a I zlehaving projections on its lower portion J EAN PAISSEAU.

